Multiple-spindle screw-making and metal-turning lathe.



PATENTED JULY 9, 1907 H. P. TRUEMAN` EL E. D. GLEGHGRN.

' MULTIPLE SPINDLE SCREW MAKING AND METAL TURNING LATHE.

APPLICATION FILED JULYB. 1904.

7 SHEETS-SHEET 1,

IVIIIIIIII YH: Nomzls PETERS cu., wAsmNaruN. n. c

No. 859.351. PATENTBD JULY 9, 1907. H. P. TRUEMAN @L E. D. GLEGHORN.

MULTIPLE SPINDLE SCREW MAKING AND METAL TURNING LAIHE.

, APPLIGATION FILED JULYG, 1904.

7 SHEETS-SHEET n.

` TH: Nolens PETERSl co., WASHINGTON. D. c.

No. 859.351. lNLIILNIEII JULI 9, 1907. 1I. In 'INULMAN I N.. D.GLLGHURN. MULTIPLE SPINDLE vSUNLIN MAKING AND METAL TURNING LAINE.

APPLIOATIGN FILED JULY 5, 1904.

` 7 SHEETS-SHEET 3.

1H: Nomus parses so', wnsgmrcfnw, n4 cA No. 859,351. PATEN'IED JULY 9,1907. H. P..TRUEMAN & E. D. CLEGHORN.

MULTIPLE SPINDLE SCREW MAKING AND METAL TURNING LATHE.

APPLICATION FILED JULY 5,' 1904.

'1 SHEETS-SHEET 4.

'i Mgg.

1H: Nonms PETERS co., wAsmNcmN, n. c,

No. 859,351. PATENTED JULY 9,'1907.

H. I. TRUEMAN & E. D. GLEGHORN. MULTIPLE SPINDLE SCREW MAKING AND METALTURNING LATHE.

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No. 959,351. EATENTED JULY 9, 1997. H. P. TRUEMAN & E. D. ULEGEUEN.MULTIPLE SPINDLE SCREW MAKING ANU METAL TURNING LATIIE.

APPLICATION FILED IULYE, 1904.

' '1 SHEETS-SHEET U.

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.Ilarlzey No. 859,351. PATENTED JULY 9, 1907.

E. P. TEUEMAN E EnD. ULEGEOEN.l MULTIPLE SPINDLE SUE-EW MAKING ANU METALTURNING LATEE.

APPLICATION FILED JULYE, 1904.

7 SHEETS-SHEET 7.

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UNITED STATESv PATENT Darien.

HENRYPATTMAN TRUEMAN, OF HYDE, AND EDWARD DUNCAN CLEGHORN, OF MANCHES-TER, ENGLAND,- ASSIGNORS, :BY DIRECT AND MESNE ASSIGNMENTS, OF ONE-THIRDTO SAID CLEGHORN, ONE-THIRD TO HARRY JACOB SMITH, OF CHARLTON CUM-HARDY,MANCHESTER, ENGLAND, AND ONE-THIRD TO CHARLES GEORGE SMITH, OF KEMBLE,CIRENCESTER, ENGLAND.

MULTIPLE-SPINDLE SCREW-MAKING AND METAL-TURNING LATI-IE.

No. 859,351. Specification of Letters Patent. 'atented July 9, 1907'.

Application filed July 5,1904. Serial No. 215,352.

To all whom it may concern: shaft, which disk is capable of beinginclined to any Be it known that we, HENRY PATTMAN TRUEMAN given angle,in a plane at right angles toits plane of roand EDWARD DUNCAN CLEGHORN,subjects of the King tation. A pair of rollers or jaw fixed to a membercar- 55 of Great Britain, residing, respectively, at Hyde, in the riedby the tool slide or carrier, adapted to engage with county of Chester,and Manchester, in the county of the rim of the inclinable disk, so asto impart a varying Lancaster, both in the Kingdom of Great Britain,have length 'of travel to the tool slide corresponding with the inventednew and useful Improvements in the Oonangle of inclination. A slidingmember supported by struction of Multiple-Spindle Screw-Making andMetalthe tool slide carrying the said rollers or jaw and also 60 TurningLathes, of which the following is a specicaengaging a hand wheel andgearing, by means of which l0 tion. l the said tool slide can beadvanced and retreated, with- This invention relates to that class ofscrew making out revolving the inclinable disk. A belt driven p ulandmetal turning lathes which are characterized-lstley, directly geared tothe worm or gear which rotates By a plurality of work carrying spindles.2nd. By a the turret, and the inclinable disk shaft, said belt being 65plurality of cutting tools, arranged to operate simultaadapted to turnthe shaft at the highest speed when the neously upon the workcarried byeach spindle. 3rd. tools carried by the slide are not operating upon theBy the work carrying spindles and cutting tools being work. A secondbelt driven pulley adapted to drive revolved by an upper revolvingshaft. 4th. By the the gears at a speed to suit the character of thematerial feeding of the material and the reciprocation of cuttersoperated upon, said belt driven pulleys being connect- 70 to and fromthework being effected by cam drums ed by trip gear in such a manner,that a cam or cams fixed upon a lower revolving shaft. 5th. By the workfixed on the lower shaft, will operate levers so as'to disspindles beingmoved through a determined arc at each engage the one pulley, and at thesame time engage the Complete revolution of the cam drums on the lowerother. A sliding clutch upon the revolving work spinshaft. dles withmeans for stopping any spindle at will. 7 5

The object of our present invention is to so construct The frame work ofthe machine may be of any consuch lathes that the operator is enabled toadapt the venient construction, and the apparatus for feeding machine toproduce a wider variety of work than herethe material and carrying thecutting tools is or may tofore. I be similar to those described inBritish Letters Patent Briefly stated our improved multiple spindleScrewgranted to the applicants, dated May, 31st. 1902, No. 80 making andmetal turning lathe embraces co-operating 12323, but as these devices donot form part oi this instrumentalities, which are so constructed andarpresent invention, they are not fully described herein.

ranged in relation to each other and so timed in their We attain theseobjects by the mechanism illusmovements asto give the operator increasedfacilitiesfor trated in the accompanying seven sheets of drawings,setting the machine to produce a wide variety of work, in which- 85without the necessity of making special cams and with- Figure l is anelevation thereof showing the various 35 out removing or re-fixingwheels. The said co-operainstrumentalities constituting our invention intheir tive instrumentalities may be numerated as followszproper relationto each other. Fig. 2 is a side eleva- A work spindle carrier or turret,hereinafter called tion, Fig. 3 a front view, and Fig. 4 a cross sectionof turret, characterized'by being mounted to revolve the inclinabledisk, in Fig. 3 shown set to an angle 90 on a horizontal axis, carryinga plurality of work carrygiving a movement as shown in dotted lines andin 40 ing spindles and having a locking bolt to retain it in a Figs. 2 &4 set to a right angle. Fig. 5 is a side elevadetcrmined position, aseries of bolts in the turret, tion partly in section of the mechanismfor moving adapted to engage with a key-way in a rotating worm theturret through a predetermined arc. Fig. G is an wheel on the turret,means for withdrawing the said end elevation of the turret shown in itslocked posi- 95 locking bolt; means for engaging the turret bolts withtion. Fig. 7 is an elevation enlarged showing one of the rotating wormwheel; means for with-drawing the the bolts for moving the turret. Fig.S is a plan enturret bolts at a predetermined arc of movement and largedof a part of the moving gear and part of the means for again locking theturret in working position; cam strip for withdrawing the bolt. Fig. 9is an elea worm or gear meshing into suitable teeth formed on vationpartly in section of the mechanism for stopping 100 the rotating wormwheel7 said worm or gear also meshthe rotation of any desired workspindle at will. Fig.

ing into a second rotating tooth gear, and which second l0 is an endview of Fig. 9. Fig. ll is an enlarged gear is fixed or keyed to ashaft, carried in bearings, a view of spring bolt e for stopping therevolution of the plain disk or wheel without teeth, fixed upon the saidwork spindle 2. Fig. l2 is an elevation partly in section of the highand low speed gearing. Fig. 13 is a 42 which brings into operation theslower moving belt front elevation, and Fig. lla plan of the mechanismfor enabling the tool slide of an abutment machine to be worked by hand.Fig. l5 is a cross section of Fig. 5 through the turret casing partwhich surrounds the turret worm wheel and through the turret itself infront of the gap ring.

Similar letters refer to similar parts throughout the several views.

ln carrying out our invention and referring to Fig. 1, the turret (L issupported in the casing b.

c is the locking bolt for retaining the turret in position during theoperation of the cutting tools, and cl the worm wheel on the turret. cis one of the bolts for engaging the turret with the said worm wheel atpre.- determined intervals.

f is an interrupted ring with a wedge end or ends and forms the devicefor withdrawing the bolt c when the turret has moved through its are ofrevolution.

g & h are the cams employed for withdrawing and replacing lock bolt c atproper intervals.

t' is the worm meshing with the worm wheel d and also with the secondworm wheell t, Figs. 1 & 12, fixed upon shaft l.

m is the disk which is capable of being adjusted at various angles, 'Itis the worm and o the worm sector for adjusting the disk m..

p is the sliding member and q, r are the jaw rollers attached thereto.

s is the hand wheel and gear carried by the tool slide body t. Onturning the hand wheel the gear causes the body L to move.longitudinally with respect to the sliding member p which is retained inposition by the jaws q, 1 being engaged with disk m.

u is the belt driven pulley which is or may be direetly geared to wormt' for driving the shaft Z and disk 'nt at the highest rate of speed.

'n is the belt driven pulley which is or may be connected to worin 'L'by a train of wheels arranged to drive the shaft l and disk w1. at aspeed suitable for the tooling of the work.

w the main trip hammer, 1t, i/ are the cams on shaft l for operating thesame, 42 is the supplementary trip lever which serves to hold theWorking clutch in gear until the main trip hammer strikes the otherclutch into operation.

2 is the work carrying spindle, supported so as to revolve freely inturret a. This spindle has feathered to it, the sleeve of the clutch 3.

l is a spur pinion on work spindle driven continuously by a gear 5,revolved by the upper or power driven shaft G. see dotted lines.

3. 7, 8, 9, l() & l1, Figs. 9, 10 & ll, are the means employed forstopping the revolution of i the work spindle when required.

The operation of the parts as a whole are as follows:- The Work spindles2 are revolved by shaft G. Power being applied by a belt 12 and pulley ucauses worm t' to rotate gears d & c. Disk n being keyed to shaft l,partakes ofthis rotating motion. The tool carrying slide is rapidlymoved iorward by the jaws q, i', which are engaged with the edge of theinclined disk m. When the tools carried by the slide t are nearlytouching the ends of the revolving material carried by 2 the cam yoperates trip hammer w and the trip lever 13 and pulley i). The tools inthe slide new advance at a determined cutting speed, until the end ofinward stroke of the slide. The Fcam n: then moves the trip hammer wwhich operates the trip lever 42 so as to engage belt pulley u. Theslide then retreats rapidly. When the tools are clear of the work thelock bolt c is withdrawn by means of the cam g, l1.. One of the turretbolts e now engages with the worm wheel (l and carries the turretthrough a determined arc ol' revolution. rl`hus presenting the workcarried by the spindles 2 to the operation of the next tool carried bythe slide l. The turret bolt e is withdrawn from worm wheel d by theinterrupted ring f and the bolt c again locks the turret. During the arcmovement of the turret the tool slide t has rapidly retreated to the endof the out stroke and has rapidly approached the work spindles, untiltrip hammer lw again engages the gears connected to the slower belt 13and pulley e. The cycle of opera tions is now complete and may berepeated automatically until the machine has exhausted its supply ol'material. When the work to be produced requires a longer or shorterstroke of the slide L, the :uljustment can be effected by operating wormn so as to alter the inclination of disk m and also by adjusting thehand wheel gear 1.4. When it is required to stop one of the workspindles 2 the clutch 3, shown more clearly in Figs. 9, 10, is movedendwise out ol' gear with the el uti-h on the spur pinion 4 rotatingcontinuously upon the spindle 2 by means of cam projection 7 whichprojection is moved by the spring bolt 8 carried by the ring 9. Themovement of the ring S) is obtained by the action oi the cam 10 throughthe rack rod 1l. The sliding member p and hand wheel s enable theoperator to withdraw the tools from the work without revol vin g theshaft l.

The entire organization herein described depends on the co-operation ofall the parts asa whole to produce the new and useful result ofincreased facility of operation and cheapening of the produc i.

None of the parts herein described as framing invention could be omittedwithout impairing useful result.

ln order that this invention may be readily carried into effect by anyperson skilled in the art of making automatic screw making machines orlathes. we will describe more fully the construction of the operatingmechanism in detail.

Figs. 5, (i, 7 & 8 show the means used to lock the turret and also themeans for moving the turret through a determined arc. The lock bolt a isheld normally in the turret socket l5 by the springs 1G, 17. The cams g& h on shaft l are timed so that at the proper moment they withdraw thelock bolt c to allow of the turning of the turret. The springs 1G & 17return the lock bolt c into socket 15.

The details of the bolt mechanism used to move the turret through adetermined arc, are shown clearly in Fig. 5; in this case the arc ofmovement is required to be 90 degrees, consequently [our bolts areemployed. two oi which are shown in Fig. 5. u is the turret in sectionand 1S indicates the slots or grooves for the reception of the bolts e.The bolts e are pressed towards the worm wheel d by means of springs l5)acting on abutment 2O shown clearly in enlarged View of the bolt c thisthe

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in Fig. 7. A key-way 21 in the worm wheel d is shown by the dotted linesFig. 8, Three of the bolts e are always held out of contact with theworm wheel d by means of the interrupted ring f which has a gap of about90 degrees and is secured to the interior of the turret easing b whileone of the bolts e is in engagement with the key-way 21 of which latterthere is only one in the worm wheel d and turns the turret until itarrives at the opposite side of the interruption when its projections 22and 23 enter upon the wedge formed end 1 of the interrupted ring f andit is thus withdrawn from the slot 21 leaving the turret a at rest,while the worm wheel continues its rotation. As the worm wheel dcompletes one revolution, the next bolt e which enters in the gap f asthe other leaves it arrives opposite to and by its spring 19 is thenpressed into the key-way 21 of the worm wheel d thereby engaging andimparting another quarter of a revolution to the turret.

The details of the inclinable disk m are shown in Figs. 2, 3 \& 4. Theboss 24 is firmly y'fixed upon the shaft l so as to rotate with thesame, boss 24 has trunnions 25 at right angles to the Shaft Z. Boss 24is also provided with a toothed sector o adapted to engage with a wormn. The disk 'm is clamped upon the trunnions 25 by bearing caps 26 & 27and is shown in a vertical position in Figs. 2 d: 4, in which case itsrotation would produce no longitudinal movement of the jaws q, r andtool slide t connected therewith.

By turning the worm fn, the disk may be inclined as shown in Fig. 3, inwhich case the longitudinal movement of q Lr would be double the angleof inclination as is well understood.

Figs. 13 & 14 show the hand wheel gear to enable tool slide t to beoperated by hand. p indicates the sliding member which is fitted in acavity of the tool slide t allowing p to move longitudinally withrespect to t. The jaws q, r are fixed to the underside of p. The upperside of p is formed as a rack, with teeth 28 adapted to engage withtoothed pinion 147 said pinion 14 is carried in bearings fixed to slidet. When the pinion is revolved the tool slide t moves longitudinallyover the slide piece p.V 29 shows a stop plug carried in a bearing fixedto slide t. 29 can be moved vertically by means of lever 30 so as to beengaged with or fr'ee from the rack 28. When 29 is engaged with therack,

' the slide partakes of the motion communicated to jaws q, r. When 29 islifted free of the rack, the sliding piece p is held by the edge of diskm but the tool slide t can be moved longitudinally by turning the pinion14.

Fig. l2 shows the high and low speed driving gear with details of thetrip mechanism. The belt driven pulley u is geared to drive t' which inturn drives gear c, on shaft l at the highest speed required. The cam yis timed to lift 31 so that the roller 32 passes the edge of bolt 33.Bolt 33 is pressed upwards by spring 34. The pressure of spring 34causes bolt 33 to throw trip hammer w and its attached weight 35 sharplyagainst collar 36 fixed to rod 37. Rod 37 is connected by a pin 38passing through a slot 39 in the wall of hollow shaft 40 to cone clutch4l feathered upon the said shaft 40. Cone clutch 41 is thus movedendwise out of contact with pulley u.. A collar on cone clutch 4lengages with one end of a lever 42 pivoted at 43; the other end of lever42 engages with collars 44, 45 on rod 46 which latter is connected bypin 47 moving through slot 48 in the wall of hollow shaft 49 to coneclutch 50, which latter is then moved into contact with pulley t. Coneclutch 50 is feathered on hollow spindle 49. On 49 is feathered a pinion51 which gears into another pinion 52, keyed on hollow spindle 40. Coneclutch 41 is feathered so as to revolve with the hollow shaft 40 but iscapable of being moved endwise thereon. The belt driven pulley 'u iscarried by a sleeve mounted in a bearing on the framework and the beltpulley u is fixed to a part of the framing shown at 54.

The trip lever 42 is furnished with the trip finger z which is pressedoutwards by spring 55. The object 0f this supplementary trip lever is tohold the acting clutch in Contact while the primary trip hammer wismoving across the point of bolt 33.

The means for stopping a work spindle when desired is shown detailed inFigs. 9 @t l0. 2 is the work spindle which is driven by gear wheel 4.Gear wheel 4 is driven by toothed pinion 5 which is rotated by a powerdriven shaft 6A The clutch sleeve 3 is feathered to work spindle 2 andis normally pressed against gear 4. When so pressed, gear teeth 56 & 57are in contact. The clutch teeth 57 are moved out of contact with theclutch teeth 56 by means of the cam projection 7. The latter is part ofthe bush extension 58 which is gartered to the clutch 3 andl issupported in a recess concentric with spindle 2. In the body of the bushextension 58 is formed a cam slot 59. 1n the turret a is fixed the pin60 which enters the cam slot 59 of the said bush, so that if the bushextension 58 is turned round by 7 the bush itself moves eiidwise thusmoving the clutch teeth 57 from contact with 56 and engaging clutchteeth 6l with teeth 62. The bush extension is normally pressed in thedirection of teeth 56 by a spring or springs shown at 63. The method of100 moving the cam projection 7 is shown clearly in Figs.

9 & 10. The ring'9 is supported by the turret casing b. 64 are gear`teeth fixed to or formed on ring 9.

A rod 11 having rack teeth to engage with teeth 64 is supported inbearings and end movement is com- -105 municated to the rod at theproper time by cam 10 fixed on shaft Z. A spring bolt 8, shown enlargedin Fig. 11, is fixed in the ring 97 this bolt 8 has one edge formed as awedge shown at 65 so that the cam projection 7` can start from positionshown by dotted lines 66 110 and pass on to the position shown at 7. Thecam projection engages with the wedge side 65 which is then pressedinwards allowing cam projection 7 to pass in front of bolt 8. Bolt 8 isthen pressed outwards by springs 67 so as to be in a position to engagecam pro- 115 jection 7. When cam l0 moves rod 11, the rings 9 and bolt 8move towards cam projection 7, thus causingV the bush extension 58 tomove endwise and remove the clutch teeth 57 from contact with 56 asherein-before described. Rod 11 is pressed against cam 10 by a 120spring 68 as shown, thus returning the ring 9 to its normal position.

This description of the parts and mode of operation, taken in connectionwith the accompanying drawings will be readily understood by personsaccustomed 125 to making or using this Class of screw lathes.v f

We lay claim to no broad princlpleSni-Abut fm@ Oiuu selves to thedevices comblned and arraiyf j l ed as and fO the purpose hereindescribed.

What we do claim as our invention, and desire to secure by LettersPatent, is-

l. ln a lathe of the character described, a stationary casing, arotatable work lturret therein, a worm wheel loose around the saidturret, a worin in gear with the said Worm wheel, means for continuouslyrotating the said Worm and automatic means in the interior of the saidcas ing and the periphery of the said turret comprising re spectively agap ring and spring controlled bolts engaging with the gap ring inconnection with lneans in the side of the said worm wheel foralternatively positively locking the said worm wheel to and releasing itfrom the said turret to impart an intermittent rotary movement thereto,all substantially as and for the purpose set forth.

2. In a lathe ot' the characterdescribed, a stationary casing, a workturret rotatable therein, a worm wheel loose around the saidturret andhaving a key Way, means for continuously rotating the said Worm Wheeland means for alternately locking it to and relieving it from the saidturret casing, comprising spring bolts located in the periphery of thesaid turret to engage successively in the said key way and thereby lockthe said wheel to the turret to move it through a determined are and agap ring secured to the interior of said turret for drawing the bolt outot' the said key way at the completion ot the said arc. allsubstantially as and for the purpose specified.

3l. ln a lathe of thel character described, a reciprocatingtool carrier,means for operating said tool carrier co1n prising a rotating shaft, arigidly held cam disk on said shaft having its periphery in operativeengagement With said tool Carrier, and means for inclining said disk toany desired extent, substantially as described.

Ll. In a lathe of the character described, a reciprocating tool carrier,means for operating said tool carrier com prising a rotating shaft, agear segment carried by said shaft, a cam disk also carried by theshaft, and having its i periphery in operative engagement with said toolcarrier.

and a worm `rotatable in said disk and meshing with said gear segment,substantially as described.

5. In a lathe of the character described, a bed. a reciprocating toolcarrier upon the said bed, a manually rotated shaft mounted on the baseof the `aid tool carrier. a spur pinion secured upon the said shaft, aslide against the bottom of the said bed, a rack on and movin"r with thesaid slide with which the said pinion gears, automatic means forreciprocating the said slide and rack and means for locking the saidpinion and tool carrier to and unlocking the same from the latter,comprising a plug in the base of the said tool carrier and a lever inoperative engage` ment therewith to raise and lower it out of and intothe said rack respectively, all combined substantially as and for thepurpose set forth.

G. ln a lathe ofthe character described. a rotatable work turret, a wormwheel thereon. a reciprocating tool Carrier, a shaft below the same` aworm wheel and a cam disk thereon for operatini.:l the said toolcarrier` a worm in gear with the said worm Wheels for rotating them. twomain driving shaft means for imparting rotary motion from one of thesaid main shafts to the said worm, a loose clutch driving pulley on eachof the said main shafts, speed ehang'ng wheels between the said two mainshafts for varying the ratio thereof and automatic means for alternatelyengaging and disengaging the said pulleys with their shafts and therebyvary the speed o1' the said tool carrier, all substantially as and torthe purpose set forth.

ln witness whereof we have hereunto set our hands in presence ot twowitnesses.

Witnesses z Anuman Bossn.\nn'r, STANLEY E, BRAINALL,

